| 浅埋偏压连拱隧道的施工优化及支护受力特征分析 |
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| 引用本文： | 朱正国,乔春生,高保彬.浅埋偏压连拱隧道的施工优化及支护受力特征分析[J].岩土力学,2008,29(10):2747-2752. |
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| 作者姓名： | 朱正国 乔春生 高保彬 |
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| 作者单位： | 北京交通大学 土木建筑工程学院，北京 100044 |
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| 摘 要： | 用岩土工程专用分析程序FLAC3D，对铜黄高速公路汤屯段富溪浅埋偏压连拱隧道进口段采用的施工过程进行了三维快速拉格朗日差分方法分析，比较了先开挖浅埋侧主洞与先开挖深埋侧主洞两种开挖施工顺序，获得了浅埋偏压连拱隧道在采用不同开挖顺序施工时各阶段隧道变形、中隔墙及支护结构的应力和位移等变化情况，通过对比、分析，从而使得实际隧道施工顺序得到优化，结果与现场监控量测资料相比较，得出的结论可为富溪浅埋偏压连拱隧道施工提供科学依据与技术指导。
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| 关 键 词： | 浅埋偏压 连拱隧道 三导洞法 开挖施工顺序 变形 |
| 收稿时间： | 2006-12-11 |
Analysis of construction optimization and supporting structure under load of shallow multi-arch tunnel under unsymmetrical pressure |
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| ZHU Zheng-guo,QIAO Chun-sheng,GAO Bao-bin.Analysis of construction optimization and supporting structure under load of shallow multi-arch tunnel under unsymmetrical pressure[J].Rock and Soil Mechanics,2008,29(10):2747-2752. |
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| Authors: | ZHU Zheng-guo QIAO Chun-sheng GAO Bao-bin |
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| Institution: | School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | The lithology of the entrance segment is weathered metasandstone,existing shallow and unsymmetrical pressure,constructing with three-pilot drift method.The construction process of Fuxi shallow multi-arch tunnel under unsymmetrical pressure using special-purpose analysis program of fast Lagrangian analysis of continua in 3-dimension is analyzed.Comparing excavated shallow-buried tunnel with excavated deep-buried tunnel,the changes of tunnel deformation,and stresses and displacements of middle-wall and suppor... |
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| Keywords: | shallow and unsymmetrical pressure multi-arch tunnel three-pilot drift method excavation construction order deformation |
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